Home / 90,121.61-124,368.45-49,285.91

Finding the Fourth Proportional to 90,121.61, 124,368.45 and 49,285.91

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Solution

The fourth proportional to 90,121.61, 124,368.45 and 49,285.91 is: 68,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,121.61 : 124,368.45 = 49,285.91 : x
  2. Step 2: Convert to fraction form
    90,121.61/124,368.45 = 49,285.91/x
  3. Step 3: Cross multiply
    90,121.61x = 124,368.45 × 49,285.91
  4. Step 4: Simplify right side
    90,121.61x = 6,129,611,611.70
  5. Step 5: Solve for x
    x = 6,129,611,611.70/90,121.61
  6. Step 6: Final answer
    x = 68,014.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.